module Data.Number.Flint.Support.D.Mat.Instances where import System.IO.Unsafe import Foreign.C.String import Foreign.Marshal.Alloc ( free ) import Data.Number.Flint.Support.D.Mat instance Show DMat where show :: DMat -> String show DMat x = forall a. IO a -> a unsafePerformIO forall a b. (a -> b) -> a -> b $ do (DMat _, CString cs) <- forall {a}. DMat -> (Ptr CDMat -> IO a) -> IO (DMat, a) withDMat DMat x Ptr CDMat -> IO CString d_mat_get_str String s <- CString -> IO String peekCString CString cs forall a. Ptr a -> IO () free CString cs forall (m :: * -> *) a. Monad m => a -> m a return String s